When you ask "What number is halfway between 49 and 489?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=49 and Y=489.
To find the number halfway between 49 and 489, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 489 into our formula, we get:
(49 + 489)/2 = 269
Thus, the number halfway between 49 and 489 is 269.
To check that our answer is correct, we subtract 49 from 269 and subtract 269 from 489 and compare the two numbers:
269 - 49 = 220
489 - 269 = 220
As you can see, the halfway number is 220 higher than 49 and 220 lower than 489. Therefore, our halfway between answer of 269 above is correct.
Halfway Between
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Halfway Between 49 and 490
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